Keyphrases
20th Century
20%
Age Data
20%
Dry Year
20%
European Settlement
40%
Fire Frequency
20%
Fire Records
100%
Fire Regime
100%
Fire Scars
100%
Fire Season
20%
Fire Size
20%
Fire-free Intervals
20%
Grand Canyon
100%
Grand Canyon National Park
20%
High Elevation
20%
Large Fires
60%
Large Surfaces
20%
Low Elevation
40%
Natural Conditions
20%
Ponderosa pine Forest
40%
Probability Intervals
60%
Record Data
100%
Record Keeping
20%
Remote Point
20%
Scar
20%
Scarred Trees
20%
Surface Fire
20%
Surface Fire Regime
20%
Tree Age
20%
Weibull
60%
Western North America
20%
Agricultural and Biological Sciences
Canyons
100%
Europeans
40%
Fire Regime
100%
Fire Scars
100%
Fire Season
20%
National Parks
20%
Pinus
40%
Tree Age
20%